cal_soilHeatFlux_hourly {simET}

Calculating soil heat flux(G) for hourly/shorter periods

Description

For hourly (or shorter) calculations, G beneath a dense cover of grass does not correlate well with air temperature.

Usage

cal_soilHeatFlux_hourly(Rn, periods)

Arguments

Rn

net radiation.From cal_netRadiation().

periods

"daylight" or "nighttime".

Value

A vector for soil heat flux [MJ m-2 day-1]

Note

Where the soil is warming, the soil heat flux G is positive. The amount of energy required for this process is subtracted from Rn when estimating evapotranspiration.

References

Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. FAO Irrigation and drainage paper No. 56. Rome: Food and Agriculture Organization of the United Nations, 1998.